Weak authentication in Windows Installer allows an authorized attacker to elevate privileges locally.
Weakness
The product uses an authentication mechanism to restrict access to specific users or identities, but the mechanism does not sufficiently prove that the claimed identity is correct.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Windows_10_1507 | Microsoft | * | 10.0.10240.21100 (excluding) |
| Windows_10_1607 | Microsoft | * | 10.0.14393.8330 (excluding) |
| Windows_10_1809 | Microsoft | * | 10.0.17763.7678 (excluding) |
| Windows_10_21h2 | Microsoft | * | 10.0.19044.6216 (excluding) |
| Windows_10_22h2 | Microsoft | * | 10.0.19045.6216 (excluding) |
| Windows_11_22h2 | Microsoft | * | 10.0.22621.5768 (excluding) |
| Windows_11_23h2 | Microsoft | * | 10.0.22631.5768 (excluding) |
| Windows_11_24h2 | Microsoft | * | 10.0.26100.4851 (excluding) |
| Windows_server_2008 | Microsoft | –sp2 (including) | –sp2 (including) |
| Windows_server_2008 | Microsoft | r2-sp1 (including) | r2-sp1 (including) |
| Windows_server_2012 | Microsoft | - (including) | - (including) |
| Windows_server_2012 | Microsoft | r2 (including) | r2 (including) |
| Windows_server_2016 | Microsoft | * | 10.0.14393.8330 (excluding) |
| Windows_server_2019 | Microsoft | * | 10.0.17763.7678 (excluding) |
| Windows_server_2022 | Microsoft | * | 10.0.20348.3989 (excluding) |
| Windows_server_2022_23h2 | Microsoft | * | 10.0.25398.1791 (excluding) |
| Windows_server_2025 | Microsoft | * | 10.0.26100.4851 (excluding) |
Extended Description
Attackers may be able to bypass weak authentication faster and/or with less effort than expected.